<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2008 Kasper Skaarhoj (kasperYYYY@typo3.com)
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt and important notices to the license
*  from the author is found in LICENSE.txt distributed with these scripts.
*
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * Finding used content elements on pages. Used as a filter for other extensions
 * which wants to know which elements are used on a templavoila page.
 *
 * @author	Kasper Skårhøj <kasperYYYY@typo3.com>
 */

	// Include TemplaVoila API
require_once (t3lib_extMgm::extPath('templavoila').'class.tx_templavoila_api.php');


/**
 * Finding used content elements
 *
 * @author	Kasper Skårhøj <kasperYYYY@typo3.com>
 * @package TYPO3
 * @subpackage tx_templavoila
 */
class tx_templavoila_usedCE {

	var $usedUids = array();

	/**
	 * Initialize object with page id.
	 *
	 * @param	integer		UID of page in processing
	 * @return	void
	 */
	function init($page_uid)	{

			// Initialize TemplaVoila API class:
		$apiObj = t3lib_div::makeInstance('tx_templavoila_api','pages');

			// Fetch the content structure of page:
		$contentTreeData = $apiObj->getContentTree('pages', t3lib_BEfunc::getRecordRaw('pages','uid='.intval($page_uid)));
		if ($contentTreeData['tree']['ds_is_found'])	{
			$this->usedUids = array_keys($contentTreeData['contentElementUsage']);
			$this->usedUids[] = 0;
		}
	}

	/**
	 * Returns TRUE if either table is NOT tt_content OR (in case it is tt_content) if the uid is in the built page.
	 */
	function filter($table, $uid)	{
		if ($table!='tt_content' || in_array($uid,$this->usedUids))	return TRUE;
	}
}

if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/templavoila/class.tx_templavoila_usedce.php'])	{
	include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/templavoila/class.tx_templavoila_usedce.php']);
}

?>